人造岩石固化包容锕系核素废物  被引量:17

Synroc Solidification of Actinide Wastes

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作  者:罗上庚[1] 杨建文[1] 朱鑫璋[1] 

机构地区:[1]中国原子能科学研究院,北京102413

出  处:《化学学报》2000年第12期1608-1614,共7页Acta Chimica Sinica

基  金:国家自然科学基金(29481002);国际原子能机构研究合同(6507和10637)项目

摘  要:研究了富钙钛锆石型和富烧绿石型两种人造岩石固化体包容锕系核素的配方设计和固化产品的鉴定评价,包括物理性能、抗浸出性能和耐辐照性能.采用了X射线衍射(XRD)、扫描电镜/能谱分析(SEM/EDS)和透射电镜/能谱分析(TEM/EDS)研究了矿相组合、元素分布和矿相化学组成等.研究表明,富钙钛锆石和富烧绿石型人造岩石都能很好地固化包容锕系核素废物.Zirconolite - rich and pyrochlore - rich synrocs were fabricated and studied. The designed formulae for solidification of actinides were given, and the properties of the waste form, like physical properties, durability properties and irradiation properties, were evaluated. The phase assemblages, elemental distribution and phase chemical composition were analyzed by using X-ray diffractometer (XRD), scanning electron microscopy with energy dispersive spectrometer (SEM/EDS) and transmission electron microscopy with energy dispersive spectrometer (TEM/EDS). The results showed that zirconolite - rich and pyrochlore - rich synrocs were suitable waste form for solidification of actinide wastes.

关 键 词:人造岩石 锕系核素 固化 包容 放射性废物处理 

分 类 号:X771[环境科学与工程—环境工程]

 

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